Table 2.

Intraoperative and histological characteristics of patients

Details of operation and histology
Duration of surgery (average in minutes)	119.4 ± 84.3
Duration of postoperative hospital stay (average in days)	9.7 ± 9.1
Method of surgery (n)
Vulvectomy	19
Hemivulvectomy	69
Local excision	33
Lymphadenectomy (n)
Yes	95
No	26
Lymph-node excision (average n)	11.2 ± 11
Patients with lymph-node metastasis (n)	27
Lymph node metastasis by sentinel	1 ± 0
Lymph node metastasis by IFLND	3.24 ± 2.02

Type of operation	Number of operations	Lymph-node metastasis (n)
IFLND	41	17
SNB	24	0
IFLND after SNB	30	7
Pelvic LNE (primary)	1	1
Pelvic LNE (secondary)	8	8

Details of operation and histology
Clavien–Dindo (n)
0 and 1	78
2	22
3a and 3b	21
4 and 5	0
Histology
Unifocal	96
Multifocal	25
Tumor spread grading (n)
I	16
II	77
III	15
Lymphatic invasion (n)	12
Venous invasion (n)	2
Perineural invasion (n)	6
Tumor size (diameter in mm)	29.2 ± 22.3
Depth of tumor invasion (mm)	5.8 ± 6.9
Tumor resection margin distance (mm)
0–3 mm	28
3–5 mm	24
5–8 mm	35
> 8 mm	17

	< 5 mm	≥ 5 mm	Total (104 patients)	p value
FIGO stage and tumor resection margin distance
FIGO I	37	38	75	n.s
FIGO II	2	3	5	n.s
FIGO III	12	10	22	n.s
FIGO IV	1	1	2	n.s